Question

give answer four quantum numbers of 20th scandium

Answer 1

Hello,
The 20th electron of Scandium is present in 4s orbital(according to electronic configuration).
therefore,
n=4,l=0,m=0,s=+1/2.
(as for s subshell, l=0 and for 1st electron in the 4s orbital,s=+1/2)

Hope that helps.
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